DOVER — A head-on collision involving a Dover City Councilor sent one man to the hospital and reduced Sixth Street to a single traffic lane for roughly one hour this morning.

Police say that Martin J. Carignan, 87, of 22 Tates Brook Road in Somersworth, was traveling northbound on Sixth Street in his 2008 Chevrolet Aveo when his vehicle was struck head-on by a Chrysler 300 driven by Michael W. Weeden, 21, of 365 Sixth St.

Police say early investigation shows that Weeden crossed the center line, and In an email statement to the news media Weeden wrote, "I crossed lanes while putting on my seatbelt which resulted in a head-on collision."

Weeden said he had just left his home and was headed to work.

Police say Weeden and Carignan were the only occupants of the vehicles in the crash, which occurred just after 10:45 a.m. on the stretch of Sixth Street between the Fresenius Medical Center and J.D. Howard Dental.

Police confirmed Carignan was transported to Wentworth-Douglass Hospital with head injuries. Sgt. Marn E. Speidel said, “given his age, we are concerned with the seriousness of his injuries due to the nature of the accident.”

Weeden sustained minor facial injuries from the air bag deployment, but police said he declined medical treatment. Speidel said airbags deployed in both vehicles.